<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>购物车</title>

    <%--静态包含base标签、css标签、jq文件--%>
    <%@include file="/pages/common/head.jsp" %>


</head>
<body>

<div id="header">
    <img class="logo_img" alt="" src="static/img/logo.gif">
    <span class="wel_word">购物车</span>
    <%--静态包含，登录 成功之后的菜单--%>
    <%@ include file="/pages/common/login_success_menu.jsp" %>
</div>

<div id="main">

    <table>
        <tr>
            <td>商品名称</td>
            <td>数量</td>
            <td>单价</td>
            <td>金额</td>
            <td>操作</td>
        </tr>
        <c:if test="${empty sessionScope.cart.items}">
            <%--如果购物车空的情况--%>
            <tr>
                <td colspan="5"><a href="index.jsp">亲，当前购物车为空！快跟小伙伴们去浏览商品吧！！！</a>
                </td>
            </tr>
        </c:if>

        <c:if test="${not empty sessionScope.cart.items}">
            <%--如果购物车非空的情况--%>
            <c:forEach items="${sessionScope.cart.items}" var="entry">
                <%--var="entry" 是Map.Entry类型--%>
                <tr>
                    <td>${entry.value.name}</td>
                    <td>
                        <input class="updateCount" style="width: 80px;"
                               bookId="${entry.value.id}"
                               type="text" value="${entry.value.count}"
                        >
                    </td>
                    <td>${entry.value.price}</td>
                    <td>${entry.value.totalPrice}</td>
                    <td><a class="deleteItem" href="cartServlet?action=deleteItem&id=${entry.value.id}">删除</a></td>
                </tr>
            </c:forEach>
        </c:if>


    </table>

    <c:if test="${not empty sessionScope.cart.items}">
        <div class="cart_info">
<span class="cart_span">购物车中共有<span
        class="b_count">${sessionScope.cart.totalCount}</span>件商品</span>
            <span class="cart_span">总金额<span
                    class="b_price">${sessionScope.cart.totalPrice}</span>元</span>
            <span class="cart_span"><a id="clearCart" href="cartServlet?action=clear">清空购物车</a></span>
            <span class="cart_span"><a href="orderServlet?action=createOrder">去结账</a></span>
        </div>
    </c:if>
    <%--<div class="cart_info">
        <span class="cart_span">购物车中共有<span class="b_count">4</span>件商品</span>
        <span class="cart_span">总金额<span class="b_price">90.00</span>元</span>
        <span class="cart_span"><a href="#">清空购物车</a></span>
        <span class="cart_span"><a href="pages/cart/checkout.jsp">去结账</a></span>
    </div>--%>

</div>


<%--静态包含页脚内容	--%>
<%@include file="/pages/common/footer.jsp" %>

</body>
<script type="text/javascript">
    $(function () {
// 给 【删除】绑定单击事件
        $("a.deleteItem").click(function () {
            return confirm("你确定要删除【" + $(this).parent().parent().find("td:first").text() + "】吗?")
        });
        $("#clearCart").click(function () {
            return confirm("你确定要清空购物车吗?");
        })
        // 给输入框绑定 onchange 内容发生改变事件
        $(".updateCount").change(function () {
            // 获取商品名称
            var name = $(this).parent().parent().find("td:first").text();
            var id = $(this).attr('bookId');
            // 获取商品数量
            var count = this.value;
            if (confirm("你确定要将【" + name + "】商品修改数量为：" + count + " 吗?")) {
                //发起请求。给服务器保存修改
                location.href =
                    "cartServlet?action=updateCount&count=" + count + "&id=" + id;
            } else {
                // defaultValue 属性是表单项 Dom 对象的属性。它表示默认的 value 属性值。
                this.value = this.defaultValue;
            }
        });
    });
</script>
</html>